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IBC AHU 800 Installation & Operating Manual

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INSTALLATION &
OPERATING MANUAL
AHU 800 model # IAHCCF1-0800
AHU 1200 Low Velocity - model # IALCCF1-1200
AHU 1200 - model # IAHCCF1-1200
AHU 1600 - model # IAHCCF1-1600
AHU 2000 Low Velocity -model # IALCCF1-2000

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Summary of Contents for IBC AHU 800

  • Page 1 INSTALLATION & OPERATING MANUAL AHU 800 model # IAHCCF1-0800 AHU 1200 Low Velocity - model # IALCCF1-1200 AHU 1200 - model # IAHCCF1-1200 AHU 1600 - model # IAHCCF1-1600 AHU 2000 Low Velocity -model # IALCCF1-2000...
  • Page 2 Note If using a heat pump or air conditioner: consult the heat pump or air conditioner's wiring instructions before connecting to the AHU. A heat pump or air conditioner producing its own control voltage will require isolation relays. If the heat pump or air conditioner's wiring diagram shows a thermostat connecting directly to the heat pump or air conditioner's board (without an external transformer), then isolation relays will be required.

  • Page 3: Table Of Contents

    Safety information Specifications Heating capacity Cabinet and air supply dimensions Dimensions for the AHU 800 model Dimensions for the AHU 1200 LV and AHU 1200 models Dimensions for the AHU 1600 and AHU 2000 LV models 1.0 Introduction 1.1 Standard features and benefits 1.2 Conformity...
  • Page 4 Section: Contents 2.5 Connecting the appliance to a tankless water heater 2.6 Cold Air Sentry (a.k.a. Freeze Protection) 2.7 Electrical connections 2.7.1 Thermostat connections 2.7.2 Wiring of the external pump and 120VAC line 2.7.3 Connecting line voltage 2.8 Worked examples 2.8.1 Wiring single-stage heating with a boiler or combi boiler 2.8.2 Wiring single-stage heating with a tankless water heater as a heat source 38 2.8.3 Wiring single-stage heating with boiler or combi boiler, and single-stage...
  • Page 5 2.8.10 Wiring two-stage cooling with a tankless water heater as a heat source 2.8.11 Wiring single-stage heat pump with a tankless water heater as a backup 2.8.12 Wiring two-stage heat pump with a tankless water heater as a backup 2.8.13 Wiring make-up air with a boiler or a combi as a heat source 3.0 Before operating the air handler 4.0 Operation 4.1 Sequence of operation...
  • Page 6 Section: Contents 6.5 Troubleshooting the IBCconnect app 6.5.1 Unstable WiFi connection 6.5.2 WiFi Password 6.5.3 IBCconnect unable to find air handler on the network 6.6 Using built-in diagnostics 7 Air handling appliance - parts diagram 8 Appendice: Wiring diagram...

  • Page 7: Safety Information

    Safety information Safety information Manual safety markings Danger Warning Points out an immediate hazardous Points out a potential hazardous situation that must be avoided to situation that must be avoided to prevent serious injury or death. prevent serious injury or death. Caution Note Points out a potential hazardous...
  • Page 8 The air handler must be installed so that electrical components are not exposed to water during operation. Note All wiring on IBC air handlers must adhere to the National Electrical Code and/or local regulations. Note All appliances conform to CSA C22.2 NO. 236-15 and UL 1995 Stds. Water coil conforms to NSF / ANSI Std.

  • Page 9: Specifications

    Specifications AHU 1200 AHU 2000 Specification AHU 800 AHU 1200 AHU 1600 Max. water temperature (°F/°C) 195 / 90 195 / 90 195 / 90 195 / 90 195 / 90 Coil performance at 180°F (Btu/hr) 66,800 80,600 80,600 99,300...

  • Page 10: Heating Capacity

    21.1 MBH 22.6 MBH 23.7 MBH Table 1 Heating Capacity rating at 800 scfm (standard cubic feet / minute) - AHU 800 AHU 1200 & AHU 1200 LV - Heating Capacity (Entering Dry Bulb Temperature 70°F) @ 1200 CFM Entering Water...
  • Page 11 Heating capacity AHU 1600 - Heating Capacity (Entering Dry Bulb Temperature 70°F) @ 1600 CFM Entering Water Temperature 3 GPM 4 GPM 5 GPM 195°F (90°C) 96.9 MBH 106.7 MBH 113.2 MBH 190°F (88°C) 92.9 MBH 102.3 MBH 108.6 MBH 180°F (82°C) 84.9 MBH 93.5 MBH...

  • Page 12: Cabinet And Air Supply Dimensions

    Section: Specifications Cabinet and air supply dimensions Dimensions for the AHU 800 model Figure 1 Front / right view Figure 2 Frontal view Figure 3 Top supply air opening Figure 4 Bottom return air opening...

  • Page 13: Dimensions For The Ahu 1200 Lv And Ahu 1200 Models

    Dimensions for the AHU 1200 LV and AHU 1200 models Figure 5 Left side return air opening Figure 6 Right side return air opening Dimensions for the AHU 1200 LV and AHU 1200 models Figure 7 Front / left view Figure 8 Frontal view...
  • Page 14 Section: Specifications Figure 9 Top view Figure 10 Bottom view Figure 11 Left side return air opening Figure 12 Right side return air opening...

  • Page 15: Dimensions For The Ahu 1600 And Ahu 2000 Lv Models

    Dimensions for the AHU 1600 and AHU 2000 LV models Dimensions for the AHU 1600 and AHU 2000 LV models Figure 13 Front / left view Figure 14 Frontal view Figure 15 Top view Figure 16 Bottom view...
  • Page 16 Section: Specifications Figure 17 Left side return air opening Figure 18 Right side return air opening...

  • Page 17: Introduction

    HVAC requirements. In addition, the AHU offers support for humidifiers and dehumidifiers to prevent bacteria or mold. And for ease of use and operation, IBC delivers the AHU with pre- programmed settings for each model. If customizing is required, HVAC professionals can download...
  • Page 18 Section: Introduction For setup instructions, see Wiring single-stage heat pump with a boiler or combi boiler as backup (emergency heat on T-stat) on page For setup instructions, see Wiring two- stage heat pump with a boiler or combi boiler as backup (2-stage thermostat) on page For setup instructions, see Wiring two-...

  • Page 19: Standard Features And Benefits

    1.1 Standard features and benefits For setup instructions, see Wiring make-up air with a boiler or a combi as a heat source on page The appliance provides up to four mounting options for flexibility and ease of installation. Return air duct connections can be connected left, right, and bottom to suit the appliance's mounting position.

  • Page 20: Conformity

    Cold Air Sentry Available options Outdoor sensor IBC part # P-9067 AC Freeze sensor IBC part # P-1015 1.2 Conformity Installation must conform to the requirements of the authority having jurisdiction. In the absence of such requirements, the installation must conform to the National Electrical Code ANSI/NFPA No.

  • Page 21: Installation

    Inspect shipment carefully for signs of damage. All equipment is carefully inspected and packed. IBC’s responsibility ceases upon delivery of the air handling appliance to the carrier. Any claims for damage or shortage must be filed immediately against the carrier. No claims for variances or shortages will be allowed by the manufacturer.

  • Page 22: Garage

    Section: Installation Figure 19 View from top of air handling Figure 20 Front view of air handling appliance in a appliance and duct in a closet closet with ducting on the left Clearance to Orientation Clearance for servicing Combustible 6 inches Left Side min.

  • Page 23: Serviceability

    2.1.7 Serviceability 2.1.7 Serviceability Install the appliance so that the front access panel is readily accessible for servicing. The front panel must be removed for access to the filter for replacement and access to the control board for wiring and setup. For more information on maintenance, see Service and maintenance on page 73.

  • Page 24: Positioning The Air Handling Unit

    Section: Installation If installing the appliance with the air supply opening on the right, you will need to reposition the air filter brackets. For instructions, see Repositioning the air filter brackets on page 2.2.2 Positioning the air handling unit You can install the appliance so the air flows in a vertical up-flow or down-flow direction, or in a horizontal left or right direction.

  • Page 25: Mounting An Appliance On The Wall

    2.2.4 Mounting an appliance on the wall Figure 27 : Air conditioning/heat pump cased coil Figure 28 : Heat pump cased coil on the bottom of the mounted on top of the appliance - upflow appliance on the return side - upflow 2.2.4 Mounting an appliance on the wall Mount the appliance with a pair of field-supplied wall brackets.

  • Page 26: Repositioning The Air Filter Brackets

    Section: Installation 2.2.5 Repositioning the air filter brackets All appliances are delivered with the filter bracket positioned for an appliance installed with a left or bottom return air supply opening. If you install the appliance with a right return air supply orientation for ducting, you will need to reposition the air filter brackets in the opposite position.
  • Page 27 2.2.5 Repositioning the air filter brackets Remove the wing nuts from the lower right Reposition the top and bottom bracket. brackets on the opposite side. Slide the filter into the repositioned brackets.

  • Page 28: Duct Work

    Section: Installation 2.3 Duct work Ducting design and installation should adhere to SMACNA and/or ASHRAE guidelines. Install the ducting system to NFPA 90B (latest edition). Adhere to the following: Size the supply air plenum duct fitting to the size of the appliance's supply air opening, and extend for 3' above the appliance.

  • Page 29: Ducting Installed In Conditioned Space

    2.3.2 Ducting installed in conditioned space Supply / Return Air Trunk Size CFM at 0.25"wc external static pressure (galvanized duct) Round Rectangular CFM range 8 x 6 160-190 8" 8 x 7 190-230 8" 9" 8 x 8 230-275 10" 10 x 8 275-360 11"...

  • Page 30: Connecting The Appliance To A Boiler

    To size the pump, refer to the Installation manual of the boiler manufacturer for boiler head loss specifications. Air Handler Coil Head Loss - AHU 800 Flow rate (gpm) Fluid pressure drop (ft) Table 9 Air handler coil head loss at 180°F (82°C) - AHU 800...

  • Page 31: Using Propylene Glycol

    10 feet between the appliance and the tankless water heater using ¾" copper piping. The table below provides pipe sizing specifications for IBC's tankless water heater. Refer to other manufacturers' manuals for correct sizing of pipes.
  • Page 32 Section: Installation Connection to the space heating circuit through a drinkable water system as shown may be prohibited by local code. Non-ferrous pump (sized for combined head loss of boiler/water heater, air handler - interconnecting piping) Check valve (may be built into pump) Potable water expansion tank Filter required where contaminants are present in the supply water Figure 31...

  • Page 33: Cold Air Sentry (A.k.a. Freeze Protection)

    2.6 Cold Air Sentry (a.k.a. Freeze Protection) 2.6 Cold Air Sentry (a.k.a. Freeze Protection) The tankless water heater installation shown in Basic installation with tankless water heater on page above lends itself to the Cold Air Sentry feature, i.e. freeze protection: see Section 4.1 Sequence of Operation for details.

  • Page 34: Thermostat Connections

    Section: Installation Figure 32 Air handling appliance - electrical wiring diagram. OpenTherm is a planned feature not currently available. 2.7.1 Thermostat connections The appliance is compatible with conventional and power stealing thermostats. OpenTherm is a planned feature not currently available. Low Voltage Terminal Description Notes...
  • Page 35 2.7.1 Thermostat connections Low Voltage Terminal Description Notes 24V power Power to the low voltage thermostat. Heating Stage 1 Thermostat connects R to W1 for first stage heating. Note: A jumper between W1 and W2 will initiate W2 speed. Heating Stage 2 Thermostat connects R to W2 for second stage heating.

  • Page 36: Wiring Of The External Pump And 120Vac Line

    Section: Installation Low Voltage Terminal Description Notes humid Compressor Stage 1 Connects to outdoor appliance. Compressor Stage 2 Connects to outdoor appliance (2nd Stage if applicable). Humidifier Humidifier Common for O/B, Compressor, Humid, De- humid Humidifier 24VAC to activate the humidifier.

  • Page 37: Connecting Line Voltage

    2.7.3 Connecting line voltage 2.7.3 Connecting line voltage Line voltage consists of a 120 VAC / 15 amp supply, external Pump – maximum 4 Amps 120 Volts, thermostat connections – Standard TH Thermostat (communications thermostat protocol), external pump control, boiler connection for a call for heat, and connection to an AC or HP appliance (air handling appliance side only).
  • Page 38 Required: the outdoor sensor for balance point control of backup heat source is available separately as IBC outdoor sensor kit P-9067. Required: sensors for cooling applications are available separately as IBC A/C sensor kit P-1015 Required: if outdoor unit requires a dry contact; typical of bonded controls. Check your outdoor unit installation manual.

  • Page 39: Wiring Single-Stage Heating With A Boiler Or Combi Boiler

    2.8.1 Wiring single-stage heating with a boiler or combi boiler 2.8.1 Wiring single-stage heating with a boiler or combi boiler Required if the boiler or combi does not have control of the pump. Optional: 'G' for fan-only operation and 'C' for t-stat common. Dry contact from the air handler to the boiler or combi boiler enables a call for heat.

  • Page 40: Wiring Single-Stage Heating With A Tankless Water Heater As A Heat Source

    Section: Installation 2.8.2 Wiring single-stage heating with a tankless water heater as a heat source Required: Pump initiates a call for tankless water heater heat source. Optional: 'G' for fan-only operation and 'C' for t-stat common. Figure 37 Single-stage heating with a tankless water heater as a heat source wiring Settings in the IBCconnect app 1.

  • Page 41: Wiring Single-Stage Heating With Boiler Or Combi Boiler, And Single-Stage Cooling

    Optional: 'G' for fan-only operation and 'C' for t-stat common. Dry contact from the air handler to the boiler or combi boiler that enables a call for heat. Required: sensors for cooling applications are available separately at IBC A/C sensor package P-1015.

  • Page 42: Wiring Two-Stage Cooling With A Boiler Or Combi Boiler Heating Using A 2-Stage Thermostat

    Section: Installation 2.8.4 Wiring two-stage cooling with a boiler or combi boiler heating using a 2-stage thermostat Required if the boiler or the combi boiler does not have control of the pump Optional: 'G' for fan-only operation and 'C' for t-stat common Dry contact from the air handler to the boiler or combi boiler that enables a call for heat Required: sensors for cooling applications are available - order A/C sensor kit P-1015...

  • Page 43: Wiring Single-Stage Heat Pump With A Boiler Or Combi Boiler As Backup

    Required: the outdoor sensor for balance point control of backup heat source is available separately as IBC outdoor sensor kit P-9067. Required: sensors for cooling applications are available separately as IBC A/C sensor kit 1015 Figure 40 Single-stage heat pump with a boiler or combi boiler as backup wiring Settings in the IBCconnect app 1.
  • Page 44 Section: Installation 5. Set Tankless Mode to Off. 6. Tap (SAVE).

  • Page 45: Wiring Single-Stage Heat Pump With A Boiler Or Combi Boiler As Backup (Emergency Heat On T-Stat)

    Required: the outdoor sensor for balance point control of backup heat source is available separately as IBC outdoor sensor kit P-9067. Required: sensors for cooling applications are available separately as IBC A/C sensor kit 1015 W2 call from T-stat activates the outdoor unit emergency heat...
  • Page 46 Section: Installation Settings in the IBCconnect app 1. Tap (menu icon), and select Basic Settings. 2. Set Heat Mode to Stg 1 HP, Stg 2 Boiler. 3. Set Cool Mode to 1 Stage HP. 4. Set Boiler Heating to Boiler Backup. 5.

  • Page 47: Wiring Two-Stage Heat Pump With A Boiler Or Combi Boiler As Backup (2-Stage Thermostat)

    Required: outdoor sensor for balance point control of backup heat source is available separately as IBC outdoor sensor P-9067. Required: sensors for cooling applications are available separately as IBC A/C sensor kit 1015 Figure 42 Two-stage heat pump with a boiler or combi boiler as backup (2-stage thermostat) wiring Settings in the IBCconnect app 1.
  • Page 48 Section: Installation 4. Set Boiler Heating to Boiler Backup. 5. Set Tankless Mode to On. 6. Tap (SAVE).

  • Page 49: Wiring Two-Stage Heat Pump (2-Stage Thermostat)

    Required: outdoor sensor for balance point control of backup heat source is available separately as IBC outdoor sensor P-9067. Required: sensors for cooling applications are available separately as IBC A/C sensor kit 1015 Figure 43 Two-stage heat pump (2-stage thermostat) wiring Settings in the IBCconnect app 1.

  • Page 50: Wiring Single-Stage Heating, Single-Stage Cooling, With The Tankless Water Heater As The Heat Source

    Required: The pump initiates a call from the tankless water heater heat source. Optional: 'G' for fan-only operation and 'C' for t-stat common. Required: Sensors for cooling applications are available separately as IBC A/C sensor kit P-1015. Figure 44...

  • Page 51: Wiring Two-Stage Cooling With A Tankless Water Heater As A Heat Source

    Required: The pump initiates a call from the tankless water heater heat source. Optional: 'G' for fan-only operation and 'C' for t-stat common Required: Sensors for cooling applications are available separately as IBC A/C sensor kit 1015 Figure 45...

  • Page 52: Wiring Single-Stage Heat Pump With A Tankless Water Heater As A Backup

    O/B terminal during cooling. Required: The outdoor sensor for balance point control of backup heat source is available separately as IBC outdoor sensor P-9067. Required: Sensors for cooling applications are available separately as IBC A/C sensor kit P-1015. Figure 46...
  • Page 53 5. Set Tankless Mode to On. 6. Tap (SAVE).

  • Page 54: Wiring Two-Stage Heat Pump With A Tankless Water Heater As A Backup

    O/B terminal during cooling Required: The outdoor sensor for balance point control of backup heat source is available separately as IBC outdoor sensor P-9067. Required: Sensors for cooling applications are available separately as IBC A/C sensor kit P-1015 Figure 47...
  • Page 55 5. Set Tankless Mode to On. 6. Tap (SAVE).

  • Page 56: Wiring Make-Up Air With A Boiler Or A Combi As A Heat Source

    Fresh air damper wired to de-humidifer contacts, operation configured using the IBCconnect app Required: for temperature control of Fresh Air Damper, the outdoor sensor is available separately as IBC outdoor sensor P-9067. Figure 48 Make-up air with a boiler or a combi as a heat source Settings in the IBCconnect app 1.
  • Page 57 7. Set FA Damper Open T (°F) to lowest Fresh Air temperature. 8. Tap (SAVE).
  • Page 58 This page is intentionally left blank.

  • Page 59: Before Operating The Air Handler

    3.0 Before operating the air handler Once installation of the appliance is completed, and before operation, review the following checklists: Checking electrical conditions Check □ Ensure the power supply to the air handling appliance is 120V 15A circuit. The appliance is not designed to work with 208-240V. If connected to 208-240V, electrical damage will result, and the appliance or components may need to be replaced.
  • Page 60 This page is intentionally left blank.

  • Page 61: Operation

    4.0 Operation Once installation of the appliance is completed, and before operating the appliance, review the following guidelines: 4.1 Sequence of operation Mode Call From Activity Heating Thermostat When there is a call for heat, R è W1 or W2 is energized;...

  • Page 62: Status Indicators

    Section: Operation Mode Call From Activity humidification the AHU will activate the dehumidifier as required. Cold Air Sentry Return air Cold Air Sentry mode monitors the return air temperature temperature into the air handling appliance. sensor If the internal return air temperature sensor detects a return air temperature below 41 °F, the air handling appliance will energize the fan, the pump contacts, and the TT (boiler) contacts to create a call for heat.

  • Page 63: Operating The Air Handler Using The Ibcconnect App

    1. Scan the respective QR codes above, or search for “IBCconnect” (one word) on the Google Play or Apple App store and tap Install. 2. Connect your device to the IBC air handler'(which has a built-in WiFi access point) through the app's WiFi network settings. If the WiFi connection is unstable, see...
  • Page 64 "IBC-AHU-xxxxx", where "xxxxx" is the serial number of the controller in the IBC-AHU. If there are multiple IBC-AHUs in the area, the appliance with the strongest signal will likely be the controller you want to connect to.
  • Page 65 The IBC-AHU will appear in the device’s list of WiFi Access Points as “IBC-AHU-xxxxx”, where “xxxxx” is the serial number of the controller in the IBC-AHU. If there are multiple IBC-AHU’s in the area, the appliance with the strongest signal will likely be the controller you want to connect 4.

  • Page 66: Operational Settings In The App

    IBCconnect connected to IBC's AHU WiFi. Once the device is connected to IBC's AHU WiFi, the following screen will display: Figure 49 iOs mobile showing message device is connected to WiFi 8.
  • Page 67 4.3.2 Operational settings in the app 4.3.2.1 Basic settings The following table shows the factory-default settings. Setting Default Description Heat Mode 2 Stage Heat Set heating mode. Options:  No heating 1 Stage Heat 2 Stage Heat Stg 1 HP, Stg 2 Aux 2 Stage Heat Pump Cool Mode 1 Stage Cool...
  • Page 68 Section: Operation Setting Default Description Pump Exercise Duration Circulates water in coil for xx (set seconds); set (sec) per local code Pump Off Delay (sec) After call for heat is satisfied, run pump for xx (set seconds) Fan Off Delay (sec) After call for heat is satisfied, run fan for xx (set seconds) Fan Only CFM...
  • Page 69 4.3.2 Operational settings in the app Setting Default Description S1 O/B Control O/B Cool Reversing valve is energized for heating or (Energized for cooling based on the setting. cooling) Heat Pump Balance Point Calculated based on building heat loss and (°F) selected heat pump.
  • Page 70 Fan Speed Operation Voltage Description and Defaults Range (CFM) Terminal AHU 800 Heating stage 1 = 500 CFM 150-800 (for mode 1 Stage Heat max = 1000) Heating stage 2 = 800 CFM 150-1000 (must be ≥ 1 Stage Heat)

  • Page 71: Programming The Air Handler

    4.3.3 Programming the air handler The IBC factory pre-programs the name of the model in the appliance. You will need to set up the mode before you can make changes to settings. Settings must be saved by pressing the Save button...
  • Page 72 The static pressure cannot be adjusted for LV (low velocity) models. IBC's air handlers are set up with a default of 0.5" WC low static pressure. Aside from the LV (low velocity) models, you can adjust the static pressure for other models to optimize the air flow of the fan.

  • Page 73: Configuring Settings And Parameters Via A Usb Text File

    4.4 Configuring settings and parameters via a USB text file IBC's air handlers are energized for cooling (O/B Cool) as a default. Some heat pumps have different setting requirements; check with your heat pump manufacturer to determine the setting. 4.3.3.5 Checking the Call status To check if the fan is operating when there is a call for heating or cooling: 1.
  • Page 74 This page is intentionally left blank.

  • Page 75: Service And Maintenance

    5.0 Service and maintenance 5.0 Service and maintenance The IBC air handling appliance is designed for durability and easy access to the main components: control board, fan assembly, hot water coil assembly, and filter. Over time, components such as sensors may require replacing and servicing. Note that failure to use the correct procedures or parts could result in unsafe operation.
  • Page 76 Section: Service and maintenance Remove the two screws from the front Remove the grommet around the electrical cover, and set aside. wires. Disconnect the fan electrical wires Thread the wires through the grommet from the control board. hole.
  • Page 77 5.3.1 Removing the fan assembly Remove the bolts and washers Tilt up the front edge of the fan and slide it securing the fan to the air handler. out. When installing the new fan, ensure Reinstall components in the reverse order. that the back edge of the fan base slides into the tabs.

  • Page 78: Replacing The Heating Coil In The Air Handler

    Section: Service and maintenance 5.3.2 Replacing the heating coil in the air handler Warning Before performing the above procedure: Turn off the electric power. Close off the isolation valves for the water lines to the water heater, and drain. Disconnect the water lines from the coil. Remove the two screws from the front Carefully unclip each of the cover, and set aside.
  • Page 79 5.3.2 Replacing the heating coil in the air handler Remove the bolts from under the chassis. Slide out the hot water coil. Remove the temperature probe. Insert the temperature probe into the new hot water coil. Replace the new heating coil, and reassemble parts in the reverse order.

  • Page 80: Replacing The Control Board

    Section: Service and maintenance 5.3.3 Replacing the control board After you replace the control board in the appliance, you will need to program some settings using app. IBCconnect To replace the control board: 1. Unplug all the connectors from the control board. 2.
  • Page 81 5.3.3 Replacing the control board 6. Plug in all connectors (temperature sensor from the coil, connector for the transformer, connector for fan power, connector for fan control, connector to the door switch, and the ground wire connector). Now you must use the air handler app ( to program the model name, mode, and IBCconnect change default settings (if desired).

  • Page 82: Temperature Sensors

    Section: Service and maintenance d. Select (SAVE). After saving, the AHU controller will restart. e. Close the app, and then open it again. For information on setting the cooling and heating mode and other settings, see Programming the air handler on page 5.4 Temperature sensors The resistance of the temperature sensors varies inversely with temperature.
  • Page 83 5.4 Temperature sensors Resist. Resist. Temp. °F/°C Temp. °F/°C Ω – Ohm Ω – Ohm 0 / -18 85,362 100 / 38 5,828 5 / -15 72,918 105 / 41 5,210 10 / -12 62,465 110 / 43 4,665 15 / -9 53,658 115 / 46 4,184...

  • Page 84: Troubleshooting

    Section: Find troubleshooting for IBC Technologies' air handling appliances. 6.0 Troubleshooting This section includes a table of warning and error messages that may appear on the appliance as well faults that may appear on the air handling appliance app. A problem that does not prevent the operation of the air handler is declared as a "warning".
  • Page 85 Thermostat Fault Simultaneous heating and Check thermostat cooling calls detected wiring. Test by disconnecting from AHU the t-stat wires that should be inactive. RTOS Fault 1 Software fault Contact IBC Technical Support for software upgrade.

  • Page 86: Measuring Voltage On Ahu Boards

    6.5.1 Unstable WiFi connection If the IBCconnect app is unable to maintain a connection to the IBC AHU WiFi, the IBCConnect app footer will show an "X" icon above WiFi. It is likely the device is attempting to perform uploads in the background.

  • Page 87: Wifi Password

    6.5.2 WiFi Password of access points. Ensure that the WiFi reconnect option is disabled. 7. Start the IBCconnect app again. Note While your device is connected to the air handler, you will not have internet access. 6.5.2 WiFi Password The WiFi password for all air handlers is '1234567890'. 6.5.3 IBCconnect unable to find air handler on the network The IBCconnect app needs to detect the air handler on the WiFi network via its network ID (SSID - Service Set Identifier).

  • Page 88: Air Handling Appliance - Parts Diagram

    Section: Air handling appliance - parts diagram 7 Air handling appliance - parts diagram...
  • Page 89 Door assembly - AHU 1200 P-1020 Door assembly - AHU 1600, AHU 2000 P-1010 Air filter size 25 x 16 x 1 - AHU 800 Air filter size 25 x 20 x 1 - AHU 1200 LV, AHU 1200, AHU 1600, AHU 2000 P-1008 Door switch, SPST-NO.
  • Page 90 Section: Air handling appliance - parts diagram...

  • Page 91: Appendice: Wiring Diagram

    8 Appendice: Wiring diagram 8 Appendice: Wiring diagram Figure 52 : AHU Air handler internal wiring diagram...
  • Page 92 Toll Free: 1-844-HEAT-IBC / 1-844-432-8422 www.ibcboiler.com Information in this document is subject to change without notice. IBC assumes no responsibility for changes made to the manual due to clerical errors, to regulation changes, or to product development. December 01, 2022 120-324E5 ©...

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